MR. A. G. BUTLER ON THE SPHINGIDjE. 581 



12. AmBULITX'? CONSTRIGILIS. 



Ambulyx constrigilis , Walker, Characters of Lepidoptera Heterocera from Congo, p. 4. uo. 2 (1869). 

 Congo. 

 Judging from the description alone, I rather doubt this being a true Ambulyx. 



13. Ambulyx canescens. 



Basiana? canescens, Walker, Lep. Het., Suppl. i. p. 38 (1864). 

 Cambodia. 



Unquestionably an Ambulyx, apparently allied to A. liturata, but without the dark 

 spots at base of primaries. 



14. Ambulyx tigrina. 



Ambulyx tigrina, Feldcr, Reise der Nov., Lep. iv. tab. lxxvii. fig. 4 (Nov. 1874). 



Allied to A. gannascus, but with the hind wings golden yellow. It comes in well 

 between the A. stngilis and A. gannascus groups. 



15. Ambulyx gannascus. 



Sphinx gannascus, Stoll, Pap. Exot. p. 157. no. 3, pi. 35. figs. 3,36 (1791). 

 Ambulyx gannascus, Burmcister, Sph. Bras., Abhaudl. naturf. Gesellsch. Halle, p. 72 (1855). 

 Amblypterus ganascus (sic), Hiibner, Verz. bek. Schmett. p. 133. no. 1429 (1816). 

 Ambulyx ganascus (sic), Walker, Lep. Het. viii. p. 121. no. 2 (1856). 



Jamaica (Gosse). B.M. 



16. Ambulyx rostralis. 



Ambulyx rostralis, Boisduval, Lep. Guat. p. 68 (1873) ; Felder, Reise der Nov., Lep. iv. tab. lxxvii. 

 fig. 6 (Nov. 1874). 



Amazons (Bates) ; Brazil (Stevens), B.M. 



According to Boisduval, from Nicaragua and New Granada. 



17. Ambulyx marginata. 



Ambulyx marginata, Butler, P. Z. S. 1875, p. 10. 



Rio Janeiro (Stevens). Type, B.M. 



18. Ambulyx eurystiienes. 



Ambulyx eurysthenes, Feldcr, Reise der Nov., Lep. iv. tab. lxxvii. fig. 5 (Nov. 1874). 



Allied to the preceding species. 



